▶ G&G 世界盃極限射擊大賽 - 規則說明 - YouTube
2014年11月17日 星期一
2014年3月26日 星期三
2014年2月12日 星期三
Snowmaking 人工造雪
Snowmaking
溫度、濕度 要夠低
霧化水珠自動結晶，基本上都接近攝氏零度以下、濕度20以 下。
How to Make Snow: Make Snow Yourself
If you want snow, but Mother Nature won't cooperate, you can take matters into your own hands and make snow yourself! This is the homemade version of real water ice snow, just like the snow that falls from the sky except without the need for clouds.
What You Need to Make Snow
You need the same things found in nature: water and a cold temperature. You turn the water into snow by dispersing it into particles small enough to freeze in the cold air.
water
pressure nozzle
There is a handy snowmaking weather tool that will tell you whether you have the proper conditions for making snow. In some climates, the only way you'll be able to make snow is if you chill a room indoors (or you can make fake snow), but much of the world can make snow at least a few days out of the year.
About the Pressure Nozzle for Making Snow
You have several options here:
- pressure washer (own or rent, use a fine mist nozzle or else use a nozzle specially designed for producing snow) [D:Will need a another nozzle to mix water and air.]
- snow cannon (not affordable to buy, but can be rented)
- garden hose with a snow attachment (make less snow per hour than the pressure washer or snow cannon, but still fun)
How to Make Snow
Basically, all you need to do is spray a fine mist of water into the air so that it cools down enough to freeze into water ice or snow. There's a technique to this.
- You'll get much better results if you point your water spray upward at a 45° angle rather than straight up. The amount of air you get mixed in with the water makes a difference, so you want to maximize this.
- You also want the water to be as cold as possible, so water from a cold stream will work better than, say, heated water from your home. [cold water source is better]
- The water from a stream or river also has the advantage of containing impurities which can act as nucleation sites to provide a surface on which snow crystals can grow. It's also possible to add what is called a 'nucleating agent' to your water which will accomplish the same purpose, essentially allowing you to produce snow at slightly warmer temperatures. The nucleating agent typically is a non-toxic polymer.
You only need a few hours of cold to make a lot of snow. The snow will last longer if the temperature stays cold, but it will take a while to melt even if it warms up. Have fun!
How To Build a Snow Maker Machine
利用文氏管原理(化油器霧化汽油)，
Free Home Snowmaker Plans (http://www.snsnowmaking.com/2011/)
For the last decade we've been selling home snowmaking machines to people all over the world. This was never our plan, but money was tight and people wanted snowmakers. Now, we no longer need the income and have made the plans for our snowmakers free so everyone can enjoy snow, just like it should be.
Step 1
Complete Parts List & Where to Find Them
Step 2
Assembling the Parts (& Tools Required)
Step 3
The Air Compressor: What You'll Need
Step 4
The Pressure Washer: What You'll Need
Step 5
Making Snow for the First Time
Preparation
1a) Wait for Cold Temps
The first step, of course, is to wait for cold enough temps. As a general rule, 27° F (-2.8° C) is when you can start making snow.
弗格森造雪機發展過程
第一階段
從人工降雪機開始的人工造雪系統，因為受外氣溫度－3℃ 以下，濕度60%以上的氣溫條件的缺點，FOCUSUN 公 司1990年開發出了世界最早的可以在零上溫度造雪，不受氣候影響的人工造雪機。新概念的人工造雪系統給滑雪場行業帶來 了一代新產業革命。
造霧機
| 高壓型 | 超細 微霧機、噴霧機、水霧機 |
| | 霧量大、蒸發快、店面工廠降溫 |
| | 降溫效果佳、乾爽不潮濕 |
訂閱：
意見 (Atom)
